/*

Copyright (c) 2008-2010, The Open Source Geospatial Foundation
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the Open Source Geospatial Foundation nor the names
      of its contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

*/

Ext.namespace("GeoExt");GeoExt.Action=Ext.extend(Ext.Action,{control:null,map:null,uScope:null,uHandler:null,uToggleHandler:null,uCheckHandler:null,constructor:function(config){this.uScope=config.scope;this.uHandler=config.handler;this.uToggleHandler=config.toggleHandler;this.uCheckHandler=config.checkHandler;config.scope=this;config.handler=this.pHandler;config.toggleHandler=this.pToggleHandler;config.checkHandler=this.pCheckHandler;var ctrl=this.control=config.control;delete config.control;if(ctrl){if(config.map){config.map.addControl(ctrl);delete config.map;}
if((config.pressed||config.checked)&&ctrl.map){ctrl.activate();}
ctrl.events.on({activate:this.onCtrlActivate,deactivate:this.onCtrlDeactivate,scope:this});}
arguments.callee.superclass.constructor.call(this,config);},pHandler:function(cmp){var ctrl=this.control;if(ctrl&&ctrl.type==OpenLayers.Control.TYPE_BUTTON){ctrl.trigger();}
if(this.uHandler){this.uHandler.apply(this.uScope,arguments);}},pToggleHandler:function(cmp,state){this.changeControlState(state);if(this.uToggleHandler){this.uToggleHandler.apply(this.uScope,arguments);}},pCheckHandler:function(cmp,state){this.changeControlState(state);if(this.uCheckHandler){this.uCheckHandler.apply(this.uScope,arguments);}},changeControlState:function(state){if(state){if(!this._activating){this._activating=true;this.control.activate();this._activating=false;}}else{if(!this._deactivating){this._deactivating=true;this.control.deactivate();this._deactivating=false;}}},onCtrlActivate:function(){var ctrl=this.control;if(ctrl.type==OpenLayers.Control.TYPE_BUTTON){this.enable();}else{this.safeCallEach("toggle",[true]);this.safeCallEach("setChecked",[true]);}},onCtrlDeactivate:function(){var ctrl=this.control;if(ctrl.type==OpenLayers.Control.TYPE_BUTTON){this.disable();}else{this.safeCallEach("toggle",[false]);this.safeCallEach("setChecked",[false]);}},safeCallEach:function(fnName,args){var cs=this.items;for(var i=0,len=cs.length;i<len;i++){if(cs[i][fnName]){cs[i].rendered?cs[i][fnName].apply(cs[i],args):cs[i].on({"render":cs[i][fnName].createDelegate(cs[i],args),single:true});}}}});
Ext.namespace("GeoExt");GeoExt.MapPanel=Ext.extend(Ext.Panel,{map:null,layers:null,center:null,zoom:null,prettyStateKeys:false,extent:null,stateEvents:["aftermapmove","afterlayervisibilitychange","afterlayeropacitychange"],initComponent:function(){if(!(this.map instanceof OpenLayers.Map)){this.map=new OpenLayers.Map(Ext.applyIf(this.map||{},{allOverlays:true}));}
var layers=this.layers;if(!layers||layers instanceof Array){this.layers=new GeoExt.data.LayerStore({layers:layers,map:this.map.layers.length>0?this.map:null});}
if(typeof this.center=="string"){this.center=OpenLayers.LonLat.fromString(this.center);}else if(this.center instanceof Array){this.center=new OpenLayers.LonLat(this.center[0],this.center[1]);}
if(typeof this.extent=="string"){this.extent=OpenLayers.Bounds.fromString(this.extent);}else if(this.extent instanceof Array){this.extent=OpenLayers.Bounds.fromArray(this.extent);}
GeoExt.MapPanel.superclass.initComponent.call(this);this.addEvents("aftermapmove","afterlayervisibilitychange","afterlayeropacitychange");this.map.events.on({"moveend":this.onMoveend,"changelayer":this.onLayerchange,scope:this});},onMoveend:function(){this.fireEvent("aftermapmove");},onLayerchange:function(e){if(e.property){if(e.property==="visibility"){this.fireEvent("afterlayervisibilitychange");}else if(e.property==="opacity"){this.fireEvent("afterlayeropacitychange");}}},applyState:function(state){this.center=new OpenLayers.LonLat(state.x,state.y);this.zoom=state.zoom;var i,l,layer,layerId,visibility,opacity;var layers=this.map.layers;for(i=0,l=layers.length;i<l;i++){layer=layers[i];layerId=this.prettyStateKeys?layer.name:layer.id;visibility=state["visibility_"+layerId];if(visibility!==undefined){visibility=(/^true$/i).test(visibility);if(layer.isBaseLayer){if(visibility){this.map.setBaseLayer(layer);}}else{layer.setVisibility(visibility);}}
opacity=state["opacity_"+layerId];if(opacity!==undefined){layer.setOpacity(opacity);}}},getState:function(){var state;if(!this.map){return;}
var center=this.map.getCenter();state={x:center.lon,y:center.lat,zoom:this.map.getZoom()};var i,l,layer,layerId,layers=this.map.layers;for(i=0,l=layers.length;i<l;i++){layer=layers[i];layerId=this.prettyStateKeys?layer.name:layer.id;state["visibility_"+layerId]=layer.getVisibility();state["opacity_"+layerId]=layer.opacity==null?1:layer.opacity;}
return state;},updateMapSize:function(){if(this.map){this.map.updateSize();}},renderMap:function(){var map=this.map;map.render(this.body.dom);this.layers.bind(map);if(map.layers.length>0){if(this.center||this.zoom!=null){map.setCenter(this.center,this.zoom);}else if(this.extent){map.zoomToExtent(this.extent);}else{map.zoomToMaxExtent();}}},afterRender:function(){GeoExt.MapPanel.superclass.afterRender.apply(this,arguments);if(!this.ownerCt){this.renderMap();}else{this.ownerCt.on("move",this.updateMapSize,this);this.ownerCt.on({"afterlayout":{fn:this.renderMap,scope:this,single:true}});}},onResize:function(){GeoExt.MapPanel.superclass.onResize.apply(this,arguments);this.updateMapSize();},onBeforeAdd:function(item){if(typeof item.addToMapPanel==="function"){item.addToMapPanel(this);}
GeoExt.MapPanel.superclass.onBeforeAdd.apply(this,arguments);},remove:function(item,autoDestroy){if(typeof item.removeFromMapPanel==="function"){item.removeFromMapPanel(this);}
GeoExt.MapPanel.superclass.remove.apply(this,arguments);},beforeDestroy:function(){if(this.ownerCt){this.ownerCt.un("move",this.updateMapSize,this);}
if(this.map&&this.map.events){this.map.events.un({"moveend":this.onMoveend,"changelayer":this.onLayerchange,scope:this});}
if(!this.initialConfig.map||!(this.initialConfig.map instanceof OpenLayers.Map)){if(this.map&&this.map.destroy){this.map.destroy();}}
delete this.map;GeoExt.MapPanel.superclass.beforeDestroy.apply(this,arguments);}});GeoExt.MapPanel.guess=function(){return Ext.ComponentMgr.all.find(function(o){return o instanceof GeoExt.MapPanel;});};Ext.reg('gx_mappanel',GeoExt.MapPanel);
Ext.namespace("GeoExt");GeoExt.PrintMapPanel=Ext.extend(GeoExt.MapPanel,{sourceMap:null,printProvider:null,printPage:null,previewScales:null,center:null,zoom:null,extent:null,currentZoom:null,initComponent:function(){if(this.sourceMap instanceof GeoExt.MapPanel){this.sourceMap=this.sourceMap.map;}
if(!this.map){this.map={};}
Ext.applyIf(this.map,{projection:this.sourceMap.getProjection(),maxExtent:this.sourceMap.getMaxExtent(),maxResolution:this.sourceMap.getMaxResolution(),units:this.sourceMap.getUnits()});if(!(this.printProvider instanceof GeoExt.data.PrintProvider)){this.printProvider=new GeoExt.data.PrintProvider(this.printProvider);}
this.printPage=new GeoExt.data.PrintPage({printProvider:this.printProvider});this.previewScales=new Ext.data.Store();this.previewScales.add(this.printProvider.scales.getRange());this.layers=[];var layer;Ext.each(this.sourceMap.layers,function(layer){var clone=layer.clone();layer.getVisibility()===true&&this.layers.push(clone);},this);this.extent=this.sourceMap.getExtent();GeoExt.PrintMapPanel.superclass.initComponent.call(this);this.printProvider.on("layoutchange",this.syncSize,this);this.printPage.on("change",this.fitZoom,this);this.map.events.register("moveend",this,this.updatePage);},afterRender:function(){GeoExt.PrintMapPanel.superclass.afterRender.apply(this,arguments);this.syncSize();if(this.initialConfig.limitScales===true){if(!this.ownerCt){this.calculatePreviewScales();}else{this.ownerCt.on({"afterlayout":{fn:this.calculatePreviewScales,scope:this,single:true}});}
this.on("resize",this.calculatePreviewScales,this);}},adjustSize:function(width,height){var printSize=this.printProvider.layout.get("size");var ratio=printSize.width/printSize.height;var ownerCt=this.ownerCt;var targetWidth=(ownerCt&&ownerCt.autoWidth)?0:(width||this.initialConfig.width);var targetHeight=(ownerCt&&ownerCt.autoHeight)?0:(height||this.initialConfig.height);if(targetWidth){height=targetWidth/ratio;if(targetHeight&&height>targetHeight){height=targetHeight;width=height*ratio;}else{width=targetWidth;}}else if(targetHeight){width=targetHeight*ratio;height=targetHeight;}
return{width:width,height:height};},fitZoom:function(){if(!this._updating&&this.printPage.scale){this._updating=true;var printBounds=this.printPage.getPrintExtent(this.map);this.currentZoom=this.map.getZoomForExtent(printBounds);this.map.zoomToExtent(printBounds);delete this._updating;}},updatePage:function(){if(!this._updating){var zoom=this.map.getZoom();this._updating=true;if(zoom===this.currentZoom){this.printPage.setCenter(this.map.getCenter());}else{this.printPage.fit(this.map);}
delete this._updating;this.currentZoom=zoom;}},calculatePreviewScales:function(){this.previewScales.removeAll();this.printPage.suspendEvents();var scale=this.printPage.scale;var viewSize=this.map.getSize();var scalesByZoom={};var zooms=[];this.printProvider.scales.each(function(rec){this.printPage.setScale(rec);var extent=this.printPage.getPrintExtent(this.map);var zoom=this.map.getZoomForExtent(extent);var idealResolution=Math.max(extent.getWidth()/viewSize.w,extent.getHeight()/viewSize.h);var resolution=this.map.getResolutionForZoom(zoom);var diff=Math.abs(idealResolution-resolution);if(!(zoom in scalesByZoom)||scalesByZoom[zoom].diff>diff){scalesByZoom[zoom]={rec:rec,diff:diff};zooms.indexOf(zoom)==-1&&zooms.push(zoom);}},this);for(var i=0,ii=zooms.length;i<ii;++i){this.previewScales.add(scalesByZoom[zooms[i]].rec);}
scale&&this.printPage.setScale(scale);this.printPage.resumeEvents();if(scale&&this.previewScales.getCount()>0){var maxScale=this.previewScales.getAt(0);var minScale=this.previewScales.getAt(this.previewScales.getCount()-1);if(scale.get("value")<minScale.get("value")){this.printPage.setScale(minScale);}else if(scale.get("value")>maxScale.get("value")){this.printPage.setScale(maxScale);}}
this.fitZoom();},print:function(options){this.printProvider.print(this.map,[this.printPage],options);},beforeDestroy:function(){this.map.events.unregister("moveend",this,this.updatePage);this.printPage.un("change",this.fitZoom,this);this.printProvider.un("layoutchange",this.syncSize,this);GeoExt.PrintMapPanel.superclass.beforeDestroy.apply(this,arguments);}});Ext.reg('gx_printmappanel',GeoExt.PrintMapPanel);
Ext.namespace("GeoExt.data");GeoExt.data.PrintPage=Ext.extend(Ext.util.Observable,{printProvider:null,feature:null,center:null,scale:null,rotation:0,customParams:null,constructor:function(config){this.initialConfig=config;Ext.apply(this,config);if(!this.customParams){this.customParams={};}
this.addEvents("change");GeoExt.data.PrintPage.superclass.constructor.apply(this,arguments);this.feature=new OpenLayers.Feature.Vector(OpenLayers.Geometry.fromWKT("POLYGON((-1 -1,1 -1,1 1,-1 1,-1 -1))"));if(this.printProvider.capabilities){this.setScale(this.printProvider.scales.getAt(0));}else{this.printProvider.on({"loadcapabilities":function(){this.setScale(this.printProvider.scales.getAt(0));},scope:this,single:true});}
this.printProvider.on({"layoutchange":this.onLayoutChange,scope:this});},getPrintExtent:function(map){map=map instanceof GeoExt.MapPanel?map.map:map;return this.calculatePageBounds(this.scale,map.getUnits());},setScale:function(scale,units){var bounds=this.calculatePageBounds(scale,units);var geom=bounds.toGeometry();var rotation=this.rotation;if(rotation!=0){geom.rotate(-rotation,geom.getCentroid());}
this.updateFeature(geom,{scale:scale});},setCenter:function(center){var geom=this.feature.geometry;var oldCenter=geom.getBounds().getCenterLonLat();var dx=center.lon-oldCenter.lon;var dy=center.lat-oldCenter.lat;geom.move(dx,dy);this.updateFeature(geom,{center:center});},setRotation:function(rotation,force){if(force||this.printProvider.layout.get("rotation")===true){var geom=this.feature.geometry;geom.rotate(this.rotation-rotation,geom.getCentroid());this.updateFeature(geom,{rotation:rotation});}},fit:function(fitTo,options){options=options||{};var map=fitTo,extent;if(fitTo instanceof GeoExt.MapPanel){map=fitTo.map;}else if(fitTo instanceof OpenLayers.Feature.Vector){map=fitTo.layer.map;extent=fitTo.geometry.getBounds();}
if(!extent){extent=map.getExtent();if(!extent){return;}}
this._updating=true;var center=extent.getCenterLonLat();this.setCenter(center);var units=map.getUnits();var scale=this.printProvider.scales.getAt(0);var closest=Number.POSITIVE_INFINITY;var mapWidth=extent.getWidth();var mapHeight=extent.getHeight();this.printProvider.scales.each(function(rec){var bounds=this.calculatePageBounds(rec,units);if(options.mode=="closest"){var diff=Math.abs(bounds.getWidth()-mapWidth)+
Math.abs(bounds.getHeight()-mapHeight);if(diff<closest){closest=diff;scale=rec;}}else{var contains=options.mode=="screen"?!extent.containsBounds(bounds):bounds.containsBounds(extent);if(contains||(options.mode=="screen"&&!contains)){scale=rec;}
return contains;}},this);this.setScale(scale,units);delete this._updating;this.updateFeature(this.feature.geometry,{center:center,scale:scale});},updateFeature:function(geometry,mods){var f=this.feature;var modified=f.geometry!==geometry;geometry.id=f.geometry.id;f.geometry=geometry;if(!this._updating){for(var property in mods){if(mods[property]===this[property]){delete mods[property];}else{this[property]=mods[property];modified=true;}}
Ext.apply(this,mods);f.layer&&f.layer.drawFeature(f);modified&&this.fireEvent("change",this,mods);}},calculatePageBounds:function(scale,units){var s=scale.get("value");var f=this.feature;var geom=this.feature.geometry;var center=geom.getBounds().getCenterLonLat();var size=this.printProvider.layout.get("size");var units=units||(f.layer&&f.layer.map&&f.layer.map.getUnits())||"dd";var unitsRatio=OpenLayers.INCHES_PER_UNIT[units];var w=size.width/72/unitsRatio*s/2;var h=size.height/72/unitsRatio*s/2;return new OpenLayers.Bounds(center.lon-w,center.lat-h,center.lon+w,center.lat+h);},onLayoutChange:function(){if(this.printProvider.layout.get("rotation")===false){this.setRotation(0,true);}
this.scale&&this.setScale(this.scale);},destroy:function(){this.printProvider.un("layoutchange",this.onLayoutChange,this);}});
Ext.namespace("GeoExt.data");GeoExt.data.PrintProvider=Ext.extend(Ext.util.Observable,{url:null,capabilities:null,method:"POST",customParams:null,scales:null,dpis:null,layouts:null,dpi:null,layout:null,constructor:function(config){this.initialConfig=config;Ext.apply(this,config);if(!this.customParams){this.customParams={};}
this.addEvents("loadcapabilities","layoutchange","dpichange","beforeprint","print","printexception","beforeencodelayer","encodelayer");GeoExt.data.PrintProvider.superclass.constructor.apply(this,arguments);this.scales=new Ext.data.JsonStore({root:"scales",sortInfo:{field:"value",direction:"DESC"},fields:["name",{name:"value",type:"float"}]});this.dpis=new Ext.data.JsonStore({root:"dpis",fields:["name",{name:"value",type:"float"}]});this.layouts=new Ext.data.JsonStore({root:"layouts",fields:["name",{name:"size",mapping:"map"},{name:"rotation",type:"boolean"}]});if(config.capabilities){this.loadStores();}else{if(this.url.split("/").pop()){this.url+="/";}
this.initialConfig.autoLoad&&this.loadCapabilities();}},setLayout:function(layout){this.layout=layout;this.fireEvent("layoutchange",this,layout);},setDpi:function(dpi){this.dpi=dpi;this.fireEvent("dpichange",this,dpi);},print:function(map,pages,options){if(map instanceof GeoExt.MapPanel){map=map.map;}
pages=pages instanceof Array?pages:[pages];options=options||{};if(this.fireEvent("beforeprint",this,map,pages,options)===false){return;}
var jsonData=Ext.apply({units:map.getUnits(),srs:map.baseLayer.projection.getCode(),layout:this.layout.get("name"),dpi:this.dpi.get("value")},this.customParams);var pagesLayer=pages[0].feature.layer;var encodedLayers=[];Ext.each(map.layers,function(layer){if(layer!==pagesLayer&&layer.getVisibility()===true){var enc=this.encodeLayer(layer);enc&&encodedLayers.push(enc);}},this);jsonData.layers=encodedLayers;var encodedPages=[];Ext.each(pages,function(page){encodedPages.push(Ext.apply({center:[page.center.lon,page.center.lat],scale:page.scale.get("value"),rotation:page.rotation},page.customParams));},this);jsonData.pages=encodedPages;if(options.overview){var encodedOverviewLayers=[];Ext.each(options.overview.layers,function(layer){var enc=this.encodeLayer(layer);enc&&encodedOverviewLayers.push(enc);},this);jsonData.overviewLayers=encodedOverviewLayers;}
if(options.legend){var legend=options.legend;var rendered=legend.rendered;if(!rendered){legend=legend.cloneConfig({renderTo:document.body,hidden:true});}
var encodedLegends=[];legend.items.each(function(cmp){if(!cmp.hidden){var encFn=this.encoders.legends[cmp.getXType()];encodedLegends=encodedLegends.concat(encFn.call(this,cmp));}},this);if(!rendered){legend.destroy();}
jsonData.legends=encodedLegends;}
if(this.method==="GET"){var url=Ext.urlAppend(this.capabilities.printURL,"spec="+encodeURIComponent(Ext.encode(jsonData)));window.open(url);this.fireEvent("print",this,url);}else{Ext.Ajax.request({url:this.capabilities.createURL,timeout:120000,jsonData:jsonData,success:function(response){var url=Ext.decode(response.responseText).getURL+
(Ext.isIE?"?inline=true":"");if(Ext.isOpera||Ext.isIE){window.open(url);}else{window.location.href=url;}
this.fireEvent("print",this,url);},failure:function(response){this.fireEvent("printexception",this,response);},params:this.initialConfig.baseParams,scope:this});}},loadCapabilities:function(){if(!this.url){return;}
var url=this.url+"info.json";Ext.Ajax.request({url:url,method:"GET",disableCaching:false,success:function(response){this.capabilities=Ext.decode(response.responseText);this.loadStores();},params:this.initialConfig.baseParams,scope:this});},loadStores:function(){this.scales.loadData(this.capabilities);this.dpis.loadData(this.capabilities);this.layouts.loadData(this.capabilities);this.setLayout(this.layouts.getAt(0));this.setDpi(this.dpis.getAt(0));this.fireEvent("loadcapabilities",this,this.capabilities);},encodeLayer:function(layer){var encLayer;for(var c in this.encoders.layers){if(OpenLayers.Layer[c]&&layer instanceof OpenLayers.Layer[c]){if(this.fireEvent("beforeencodelayer",this,layer)===false){return;}
encLayer=this.encoders.layers[c].call(this,layer);this.fireEvent("encodelayer",this,layer,encLayer);break;}}
return(encLayer&&encLayer.type)?encLayer:null;},getAbsoluteUrl:function(url){var a;if(Ext.isIE){a=document.createElement("<a href='"+url+"'/>");a.style.display="none";document.body.appendChild(a);a.href=a.href;document.body.removeChild(a);}else{a=document.createElement("a");a.href=url;}
return a.href;},encoders:{"layers":{"WMS":function(layer){var enc=this.encoders.layers.HTTPRequest.call(this,layer);Ext.apply(enc,{type:'WMS',layers:[layer.params.LAYERS].join(",").split(","),format:layer.params.FORMAT,styles:[layer.params.STYLES].join(",").split(",")});var param;for(var p in layer.params){param=p.toLowerCase();if(!layer.DEFAULT_PARAMS[param]&&"layers,styles,width,height,srs".indexOf(param)==-1){if(!enc.customParams){enc.customParams={};}
enc.customParams[p]=layer.params[p];}}
return enc;},"OSM":function(layer){var enc=this.encoders.layers.TileCache.call(this,layer);return Ext.apply(enc,{type:'OSM',baseURL:enc.baseURL.substr(0,enc.baseURL.indexOf("$")),extension:"png"});},"TMS":function(layer){var enc=this.encoders.layers.TileCache.call(this,layer);return Ext.apply(enc,{type:'TMS',format:layer.type});},"TileCache":function(layer){var enc=this.encoders.layers.HTTPRequest.call(this,layer);return Ext.apply(enc,{type:'TileCache',layer:layer.layername,maxExtent:layer.maxExtent.toArray(),tileSize:[layer.tileSize.w,layer.tileSize.h],extension:layer.extension,resolutions:layer.serverResolutions||layer.resolutions});},"KaMapCache":function(layer){var enc=this.encoders.layers.KaMap.call(this,layer);return Ext.apply(enc,{type:'KaMapCache',group:layer.params['g'],metaTileWidth:layer.params['metaTileSize']['w'],metaTileHeight:layer.params['metaTileSize']['h']});},"KaMap":function(layer){var enc=this.encoders.layers.HTTPRequest.call(this,layer);return Ext.apply(enc,{type:'KaMap',map:layer.params['map'],extension:layer.params['i'],group:layer.params['g']||"",maxExtent:layer.maxExtent.toArray(),tileSize:[layer.tileSize.w,layer.tileSize.h],resolutions:layer.serverResolutions||layer.resolutions});},"HTTPRequest":function(layer){return{baseURL:this.getAbsoluteUrl(layer.url instanceof Array?layer.url[0]:layer.url),opacity:(layer.opacity!=null)?layer.opacity:1.0,singleTile:layer.singleTile};},"Image":function(layer){return{type:'Image',baseURL:this.getAbsoluteUrl(layer.getURL(layer.extent)),opacity:(layer.opacity!=null)?layer.opacity:1.0,extent:layer.extent.toArray(),pixelSize:[layer.size.w,layer.size.h],name:layer.name};},"Vector":function(layer){if(!layer.features.length){return;}
var encFeatures=[];var encStyles={};var features=layer.features;var featureFormat=new OpenLayers.Format.GeoJSON();var styleFormat=new OpenLayers.Format.JSON();var nextId=1;var styleDict={};var feature,style,dictKey,dictItem,styleName;for(var i=0,len=features.length;i<len;++i){feature=features[i];style=feature.style||layer.style||layer.styleMap.createSymbolizer(feature,feature.renderIntent);dictKey=styleFormat.write(style);dictItem=styleDict[dictKey];if(dictItem){styleName=dictItem;}else{styleDict[dictKey]=styleName=nextId++;if(style.externalGraphic){encStyles[styleName]=Ext.applyIf({externalGraphic:this.getAbsoluteUrl(style.externalGraphic)},style);}else{encStyles[styleName]=style;}}
var featureGeoJson=featureFormat.extract.feature.call(featureFormat,feature);featureGeoJson.properties=OpenLayers.Util.extend({_gx_style:styleName},featureGeoJson.properties);encFeatures.push(featureGeoJson);}
return{type:'Vector',styles:encStyles,styleProperty:'_gx_style',geoJson:{type:"FeatureCollection",features:encFeatures},name:layer.name,opacity:(layer.opacity!=null)?layer.opacity:1.0};}},"legends":{"gx_wmslegend":function(legend){var enc=this.encoders.legends.base.call(this,legend);var icons=[];for(var i=1,len=legend.items.getCount();i<len;++i){icons.push(this.getAbsoluteUrl(legend.items.get(i).url));}
enc[0].classes[0]={name:"",icons:icons};return enc;},"gx_urllegend":function(legend){var enc=this.encoders.legends.base.call(this,legend);enc[0].classes.push({name:"",icon:this.getAbsoluteUrl(legend.items.get(1).url)});return enc;},"base":function(legend){return[{name:legend.items.get(0).text,classes:[]}];}}}});
Ext.namespace("GeoExt","GeoExt.data");GeoExt.data.LayerReader=function(meta,recordType){meta=meta||{};if(!(recordType instanceof Function)){recordType=GeoExt.data.LayerRecord.create(recordType||meta.fields||{});}
GeoExt.data.LayerReader.superclass.constructor.call(this,meta,recordType);};Ext.extend(GeoExt.data.LayerReader,Ext.data.DataReader,{totalRecords:null,readRecords:function(layers){var records=[];if(layers){var recordType=this.recordType,fields=recordType.prototype.fields;var i,lenI,j,lenJ,layer,values,field,v;for(i=0,lenI=layers.length;i<lenI;i++){layer=layers[i];values={};for(j=0,lenJ=fields.length;j<lenJ;j++){field=fields.items[j];v=layer[field.mapping||field.name]||field.defaultValue;v=field.convert(v);values[field.name]=v;}
values.layer=layer;records[records.length]=new recordType(values,layer.id);}}
return{records:records,totalRecords:this.totalRecords!=null?this.totalRecords:records.length};}});
Ext.namespace("GeoExt.data");GeoExt.data.LayerRecord=Ext.data.Record.create([{name:"layer"},{name:"title",type:"string",mapping:"name"}]);GeoExt.data.LayerRecord.prototype.getLayer=function(){return this.get("layer");};GeoExt.data.LayerRecord.prototype.setLayer=function(layer){if(layer!==this.data.layer){this.dirty=true;if(!this.modified){this.modified={};}
if(this.modified.layer===undefined){this.modified.layer=this.data.layer;}
this.data.layer=layer;if(!this.editing){this.afterEdit();}}};GeoExt.data.LayerRecord.prototype.clone=function(id){var layer=this.getLayer()&&this.getLayer().clone();return new this.constructor(Ext.applyIf({layer:layer},this.data),id||layer.id);};GeoExt.data.LayerRecord.create=function(o){var f=Ext.extend(GeoExt.data.LayerRecord,{});var p=f.prototype;p.fields=new Ext.util.MixedCollection(false,function(field){return field.name;});GeoExt.data.LayerRecord.prototype.fields.each(function(f){p.fields.add(f);});if(o){for(var i=0,len=o.length;i<len;i++){p.fields.add(new Ext.data.Field(o[i]));}}
f.getField=function(name){return p.fields.get(name);};return f;};
Ext.namespace("GeoExt.data");GeoExt.data.LayerStoreMixin=function(){return{map:null,reader:null,constructor:function(config){config=config||{};config.reader=config.reader||new GeoExt.data.LayerReader({},config.fields);delete config.fields;var map=config.map instanceof GeoExt.MapPanel?config.map.map:config.map;delete config.map;if(config.layers){config.data=config.layers;}
delete config.layers;var options={initDir:config.initDir};delete config.initDir;arguments.callee.superclass.constructor.call(this,config);if(map){this.bind(map,options);}},bind:function(map,options){if(this.map){return;}
this.map=map;options=options||{};var initDir=options.initDir;if(options.initDir==undefined){initDir=GeoExt.data.LayerStore.MAP_TO_STORE|GeoExt.data.LayerStore.STORE_TO_MAP;}
var layers=map.layers.slice(0);if(initDir&GeoExt.data.LayerStore.STORE_TO_MAP){this.each(function(record){this.map.addLayer(record.getLayer());},this);}
if(initDir&GeoExt.data.LayerStore.MAP_TO_STORE){this.loadData(layers,true);}
map.events.on({"changelayer":this.onChangeLayer,"addlayer":this.onAddLayer,"removelayer":this.onRemoveLayer,scope:this});this.on({"load":this.onLoad,"clear":this.onClear,"add":this.onAdd,"remove":this.onRemove,"update":this.onUpdate,scope:this});this.data.on({"replace":this.onReplace,scope:this});},unbind:function(){if(this.map){this.map.events.un({"changelayer":this.onChangeLayer,"addlayer":this.onAddLayer,"removelayer":this.onRemoveLayer,scope:this});this.un("load",this.onLoad,this);this.un("clear",this.onClear,this);this.un("add",this.onAdd,this);this.un("remove",this.onRemove,this);this.data.un("replace",this.onReplace,this);this.map=null;}},onChangeLayer:function(evt){var layer=evt.layer;var recordIndex=this.findBy(function(rec,id){return rec.getLayer()===layer;});if(recordIndex>-1){var record=this.getAt(recordIndex);if(evt.property==="order"){if(!this._adding&&!this._removing){var layerIndex=this.map.getLayerIndex(layer);if(layerIndex!==recordIndex){this._removing=true;this.remove(record);delete this._removing;this._adding=true;this.insert(layerIndex,[record]);delete this._adding;}}}else if(evt.property==="name"){record.set("title",layer.name);}else{this.fireEvent("update",this,record,Ext.data.Record.EDIT);}}},onAddLayer:function(evt){if(!this._adding){var layer=evt.layer;this._adding=true;this.loadData([layer],true);delete this._adding;}},onRemoveLayer:function(evt){if(this.map.unloadDestroy){if(!this._removing){var layer=evt.layer;this._removing=true;this.remove(this.getById(layer.id));delete this._removing;}}else{this.unbind();}},onLoad:function(store,records,options){if(!Ext.isArray(records)){records=[records];}
if(options&&!options.add){this._removing=true;for(var i=this.map.layers.length-1;i>=0;i--){this.map.removeLayer(this.map.layers[i]);}
delete this._removing;var len=records.length;if(len>0){var layers=new Array(len);for(var j=0;j<len;j++){layers[j]=records[j].getLayer();}
this._adding=true;this.map.addLayers(layers);delete this._adding;}}},onClear:function(store){this._removing=true;for(var i=this.map.layers.length-1;i>=0;i--){this.map.removeLayer(this.map.layers[i]);}
delete this._removing;},onAdd:function(store,records,index){if(!this._adding){this._adding=true;var layer;for(var i=records.length-1;i>=0;--i){layer=records[i].getLayer();this.map.addLayer(layer);if(index!==this.map.layers.length-1){this.map.setLayerIndex(layer,index);}}
delete this._adding;}},onRemove:function(store,record,index){if(!this._removing){var layer=record.getLayer();if(this.map.getLayer(layer.id)!=null){this._removing=true;this.removeMapLayer(record);delete this._removing;}}},onUpdate:function(store,record,operation){if(operation===Ext.data.Record.EDIT){if(record.modified&&record.modified.title){var layer=record.getLayer();var title=record.get("title");if(title!==layer.name){layer.setName(title);}}}},removeMapLayer:function(record){this.map.removeLayer(record.getLayer());},onReplace:function(key,oldRecord,newRecord){this.removeMapLayer(oldRecord);},getByLayer:function(layer){var index=this.findBy(function(r){return r.getLayer()===layer;});if(index>-1){return this.getAt(index);}},destroy:function(){this.unbind();GeoExt.data.LayerStore.superclass.destroy.call(this);}};};GeoExt.data.LayerStore=Ext.extend(Ext.data.Store,new GeoExt.data.LayerStoreMixin);GeoExt.data.LayerStore.MAP_TO_STORE=1;GeoExt.data.LayerStore.STORE_TO_MAP=2;